Method and apparatus for reducing distortion in amplifiers

Details Method and apparatus for reducing distortion in amplifiers Method and apparatus for reducing distortion in amplifiers

1986-10-24

1988-04-12

LaRoche, Eugene R.

Amplifiers

Hum or noise or distortion bucking introduced into signal...

330 10, H03F 126

Patent

active

047377313

ABSTRACT:
Amplitude modulation apparatus is provided having means for providing a radio frequency carrier signal, and means for receiving an audio frequency signal to be used to amplitude modulate the RF carrier signal. Amplitude modulator means is provided responsive to the AF signal and to the RF carrier signal for amplitude modulating the RF carrier signal in accordance with the AF signal so as to thereby provide an amplitude modulated RF carrier signal. A power supply provides at least one DC power signal for powering the amplitude modulator means. Correction means is included for sensing variations in the DC power signal and for gain adjusting the audio frequency signal in accordance with the variations in the DC power signal, whereby modulation distortion of the amplitude modulated RF carrier signal is reduced.

REFERENCES:
patent: 3662290 (1972-05-01), Elliott
patent: 4199723 (1980-04-01), Cummings et al.
patent: 4247948 (1981-01-01), Okada et al.

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